Re: linked list problem
Re: linked list problem
- Subject: Re: linked list problem
- From: "stephen joseph butler" <email@hidden>
- Date: Mon, 31 Mar 2008 16:39:22 -0500
On Mon, Mar 31, 2008 at 4:31 PM, Nick Rogers <email@hidden> wrote:
> Hi,
> I have the following singly linked list:
>
> typedef struct Dir
> {
> // some space to hold data here
> void *next; // have to take void * here cause Dir* leads to
> compile
> error
> }DIR;
It won't compile because at this point Dir isn't typedefed, so C requires
"struct Dir". So...
typedef struct Dir
{
// some space to hold data here
struct Dir *next;
}DIR;
> In my code:
>
> DIR *temp = parentDir; //parentDir is allocated initially but its
> next is not allocated at this point
> while (temp)
> {
> temp = (DIR*)temp->next; //here next is null so, temp now is
> null
> }
> temp = newDir; //here newDir is already allocated, but temp
> doesn't
> get allocated, in a way parentDir->next remains null.
>
>
> While this type of code works fine on VS2005, it doesn't wprk here in
> cocoa.
> How else can I reach the end of the list and add a new node?
There is no way the code you show works for any C compiler, let alone
VS2005. You never do the linking part of the linked list.
Besides, none of this is really Cocoa so it doesn't belong on this list.
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